ETH Zurich combines 3D printing and casting to make more efficient concrete structures

"Researchers at ETH Zurich have created a machine that controls the setting rate of concrete to offer a "seamless transition between casting and 3D printing" so that structures can be made that use less material.
The system called Fast Complexity combines two existing technologies for creating concrete forms – 3D printing concrete and casting into formwork.
It was developed by Ana Anton, Andrei Jipa, Benjamin Dillenburger from ETH Zurich's Digital Building Technologies group and Lex Reiter